#aa div{
        background-color:#ccc;
        margin-top:10px;
        background: none repeat scroll 0 0 #ccc; 
        width:107px; 
        height:42px;  
        border-width: 0; 
        font-size: 17px;  
        color: #FFFFFF;  
        font-weight: 500;  
        border-radius: 6px;  
        cursor:pointer;
        text-align:center;
        line-height:42px;   
    }
    a:link {
        text-decoration: none;
    }
    #header1{
        margin-top:30px;
    }
    #header2 div{
        float:right;
        padding-right:15px;
        margin-left:20px;
        margin-top:-19px;
    }
    #tuichu{
        width:50px;
        height:50px;
        
    }
    img{
        width:43px;
        height:43px;
    }
   img:hover{
      width:45px;
      height:45px;
   }
    #shou{
        width:50px;
        height:50px;
        

    }
    
    #news{
        background-color:#cccccc;
        font-family : 微软雅黑,宋体;
        font-size : 1em;
        color : #f00;
        line-height:70px;
    }